$ git clone -n https://src.fedoraproject.org/rpms/perl-Data-Dumper-Names.git /var/lib/mock/f45-build-22839-594/root/chroot_tmpdir/scmroot/perl-Data-Dumper-Names
Cloning into '/var/lib/mock/f45-build-22839-594/root/chroot_tmpdir/scmroot/perl-Data-Dumper-Names'...
$ git fetch origin 66574d47f6da6f1fdc2d3089b3d26d8cb71dbb2c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Data-Dumper-Names
 * [new ref]         66574d47f6da6f1fdc2d3089b3d26d8cb71dbb2c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 66574d4 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild